Well, for starters I'm 2-0 when betting on Lester this year. Lester has been Bostons stopper when they need him this year. The fact that any line involving Boston is -119(what I got opened) is a great buy.
Lester is 4-0 for his career against Baltimore.
Guthrie is 1-1 and got tagged the last time out.
I simply don't see Boston losing 3 in a row, especially with Lester pitching.
Baltimore is 11-17 on the year against LHP, 6-7 at home.